Re: lib/45572: EFAULT from time(3)

[David Holland <dholland-bugs%netbsd.org@localhost>]

The following reply was made to PR lib/45572; it has been noted by GNATS.

From: David Holland <dholland-bugs%netbsd.org@localhost>
To: gnats-bugs%NetBSD.org@localhost
Cc: 
Subject: Re: lib/45572: EFAULT from time(3)
Date: Sat, 5 Nov 2011 18:37:49 +0000

 On Sat, Nov 05, 2011 at 06:20:04PM +0000, Christos Zoulas wrote:
  >  |  But then the bug is in the manual page.
  >  
  >  Absolutely. I fixed it.
 
 If the stars are aligned just so, it *can* fail and return EFAULT.
 
 Also, based on this text in errno(2) I think it would be better to
 change the man page back:
 
      14 EFAULT Bad address.  The system detected an invalid address in
              attempting to use an argument of a call.  The reliable detection
              of this error cannot be guaranteed and when not detected may
              result in the generation of a signal, indicating an address vio-
              lation, which is sent to the process.
 
 I have argued in the past that all syscalls returning EFAULT should
 also post SIGSEGV; there are a number of reasons that's desirable.
 
 -- 
 David A. Holland
 dholland%netbsd.org@localhost